Vacuum sizing sleeve

Abstract

The utility model discloses a vacuum sizing sleeve, belongs to the technical field of pipe machining, and aims to solve the technical problems that in the application process of a vacuum sizing sleeve in the prior art, a water conveying pipeline is complex and not easy to overhaul, and quality monitoring of a PE pipeline is affected. The vacuum sizing sleeve comprises a sizing guide pipe, one end of the sizing guide pipe is connected with a sizing end sleeve, and the sizing guide pipe and the sizing end sleeve are the same in inner diameter; the sizing end sleeve is sleeved with a water distribution ring, a water drainage channel is formed in the water distribution ring and surrounds the water distribution ring by a circle, a water injection connector communicated with the water drainage channel is arranged on the outer wall of the water distribution ring, and a plurality of water distribution holes communicated with the water drainage channel are evenly formed in the inner wall of the water distribution ring; a plurality of water inlet holes are formed in the sizing end sleeve in the radial direction. According to the vacuum sizing sleeve, the number of water injection connectors is reduced, the problems that water conveying pipes are complex and not easy to overhaul, and quality monitoring of PE pipelines is affected are solved as much as possible, and the structure is more reasonable and practical.

Description

TECHNICAL FIELD

[0001] The utility model belongs to pipe processing technical field, concretely relates to a vacuum sizing sleeve. BACKGROUND

[0002] In the production process of PE (polyethylene) pipeline, the sizing sleeve is one of the key equipment to ensure the dimensional accuracy and surface quality of the pipe material, and the traditional PE pipeline production sizing mode mainly includes two kinds of air sealing sizing and vacuum sizing. With the continuous progress of technology and the improvement of production efficiency requirements, the vacuum sizing mode gradually becomes the mainstream process of PE pipeline production due to its advantages of short production cycle, convenient random detection and the like. In the vacuum sizing process, the vacuum sizing sleeve as the core component makes the outer wall of the pipe material closely adhere to the inner wall of the sizing sleeve through vacuum adsorption, so as to achieve the effect of sizing and cooling. This process not only can ensure the dimensional accuracy and surface quality of the pipe material, but also can effectively reduce the waste rate and improve the production efficiency.

[0003] However, in the existing design of the vacuum sizing sleeve, there are still some deficiencies. The traditional vacuum sizing sleeve adopts the structure mode of multiple water delivery joints for water delivery. In the actual application process, the multiple water delivery joints are respectively connected with multiple water delivery pipelines, and there are phenomena of complex water delivery pipelines and difficult maintenance. In addition, the multiple pipelines are arranged disorderly, which affects the monitoring of the quality of the PE pipeline. Therefore, the utility model provides a vacuum sizing sleeve to solve the above problems. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of the prior art, the purpose of the utility model is to provide a vacuum sizing sleeve, which aims to solve the technical problems of complex water delivery pipelines, difficult maintenance and influence on the monitoring of the quality of the PE pipeline in the application process of the vacuum sizing sleeve in the prior art.

[0005] TECHNICAL SCHEME

[0006] In order to solve the above technical problems, the utility model provides a vacuum sizing sleeve, which comprises a sizing guide pipe, one end of the sizing guide pipe is connected with a sizing end sleeve, the inner diameters of the sizing guide pipe and the sizing end sleeve are the same, a water distribution ring is sleeved on the sizing end sleeve, a drain passage is arranged in the water distribution ring, the drain passage is arranged in a ring around the water distribution ring, a water injection joint is arranged on the outer wall of the water distribution ring and communicates with the drain passage, a plurality of water distribution holes are uniformly arranged on the inner wall of the water distribution ring and communicate with the drain passage, a plurality of water inlet holes are radially arranged on the sizing end sleeve and communicate with the internal space of the sizing end sleeve, and the plurality of water inlet holes are aligned and communicated with the plurality of water distribution holes.

[0007] Preferably, the water injection joint is provided with one.

[0008] Preferably, the communication part of the drain passage and the water injection joint is arranged in a "person" shape.

[0009] Preferably, the sizing end sleeve is provided with a mounting disc at one end of the sizing conduit, and a plurality of mounting holes are formed in the mounting disc.

[0010] Preferably, a plurality of lug blocks are arranged on the outer peripheral wall of the water distribution ring, and connecting screws are arranged on the lug blocks and are screwed with the mounting disc.

[0011] Preferably, a sealing ring is arranged in the water distribution ring, the sealing ring is in extrusion fit with the inner wall of the water distribution ring and the outer wall of the sizing end sleeve, and the water distribution hole extends through the sealing ring.

[0012] Preferably, a protrusion is arranged on the inner circular surface of the sealing ring at a position corresponding to the water distribution hole, and a recess is arranged on the outer wall of the sizing end sleeve at a position corresponding to the water inlet hole, and the protrusion is embedded in the recess.

[0013] Preferably, a plurality of groove holes are formed in the pipe wall of the sizing conduit, and the plurality of groove holes are distributed in a staggered manner around the sizing conduit.

[0014] Preferably, the spacing of the plurality of groove holes gradually increases in a direction away from the sizing end sleeve, and the width of the plurality of groove holes gradually increases in the direction away from the sizing end sleeve.

[0015] Advantages

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] The utility model discloses a sizing conduit and a sizing end sleeve are arranged, the water injection joint is connected with the water source, the PE pipeline passes through the sizing end sleeve and the sizing conduit after extruding through the extruder, under the action of vacuum force, the PE pipeline is in fit with the inner wall of the sizing end sleeve and the sizing conduit and is transported, simultaneously, the water injection joint is used to the transportation cooling water in the water drainage channel, and the cooling water is evenly flowed to the inner wall of the sizing end sleeve and the outer wall of the PE pipeline through the water drainage channel and is discharged after the drainage, and the whole realizes the effect of cooling and shaping of the PE pipeline. Since the spacing of the plurality of groove holes gradually increases in the direction away from the sizing end sleeve, and the width of the plurality of groove holes gradually increases in the direction away from the sizing end sleeve, the structure design can avoid the phenomenon that the PE pipeline is embedded in the groove hole under the action of vacuum force in the initial stage of shaping and affects the appearance of the PE pipeline.

[0018] The utility model discloses a split water circle is set on the sizing end sleeve, and the cooling water is branched by the drain passage, the plurality of water distribution holes and the water inlet hole in the split water circle, and then only one water injection joint is needed to continuously convey the cooling water, compared with the structure mode that the plurality of water injection joints are used to convey water in the traditional vacuum sizing sleeve, the quantity of water injection joint is greatly reduced, and the problems of complex water conveying pipe, difficult maintenance and influence PE pipeline quality monitoring are avoided as far as possible. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows, obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by the drawings for the person skilled in the art without creating labor.

[0020] Figure 1 It is the whole structure schematic diagram of the utility model;

[0021] Figure 2 It is the structure schematic diagram of the sizing catheter in the utility model;

[0022] Figure 3 It is the whole structure schematic diagram of the sizing end block and split water circle in the utility model;

[0023] Figure 4 It is the exploded structure schematic diagram of the sizing end block and split water circle in the utility model;

[0024] Figure 5 It is the sectional view of split water circle in the utility model.

[0025] The mark in the drawing is: 1, sizing catheter;2, sizing end sleeve;3, split water circle;4, mounting disc;5, slot hole;6, water injection joint;7, ear block;8, connecting screw;9, sealing ring;10, water inlet hole;11, water distribution hole;12, drain passage;13, lug. DETAILED DESCRIPTION

[0026] The technical scheme in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model, obviously, the described embodiments are only some embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creating labor belong to the scope of protection of the utility model.

[0027] The embodiment provides a vacuum sizing sleeve, and the structure schematic diagram is as Figures 1-5As shown, it comprises a sizing conduit 1, one end of the sizing conduit 1 is connected with a sizing end sleeve 2, the inner diameter of the sizing conduit 1 and the sizing end sleeve 2 is the same; a water distribution ring 3 is sleeved on the sizing end sleeve 2, a drain passage 12 is arranged in the water distribution ring 3, the drain passage 12 is arranged in a ring around the water distribution ring 3, a water injection joint 6 is arranged on the outer wall of the water distribution ring 3 and communicates with the drain passage 12, a plurality of water distribution holes 11 are evenly arranged on the inner wall of the water distribution ring 3 and communicate with the drain passage 12, a plurality of water inlet holes 10 are radially arranged on the sizing end sleeve 2 and communicate with the inner space of the sizing end sleeve 2, the plurality of water inlet holes 10 are aligned and communicate with the plurality of water distribution holes 11, a plurality of slot holes 5 are arranged on the wall of the sizing conduit 1 and are distributed in a staggered manner around the sizing conduit 1. The water injection joint 6 is connected with a water source, after the PE pipe is extruded by the extruder, it passes through the sizing end sleeve 2 and the sizing conduit 1, under the action of vacuum force, the PE pipe is combined with the inner wall of the sizing end sleeve 2 and the sizing conduit 1 for conveying, at the same time, cooling water is conveyed into the drain passage 12 by the water injection joint 6, the cooling water is drained through the drain passage 12 and then flows uniformly to the inner wall of the sizing end sleeve 2 and the outer wall of the PE pipe through the plurality of water distribution holes 11 and the plurality of water inlet holes 10, the PE pipe is rapidly cooled and shaped, at the same time, a layer of water film is formed between the PE pipe and the inner wall of the sizing end sleeve 2 and the sizing conduit 1, which is beneficial to the conveying of the PE pipe, the cooling water flowing into the sizing conduit 1 can flow out and be discharged through the plurality of slot holes 5, and the overall effect of cooling and shaping the PE pipe is realized.

[0028] In the embodiment, the spacing of the plurality of slot holes 5 gradually increases in the direction away from the sizing end sleeve 2, and the width of the plurality of slot holes 5 gradually increases in the direction away from the sizing end sleeve 2, which can avoid the phenomenon that the PE pipe is embedded in the slot hole 5 at the initial shaping stage and affects the appearance of the PE pipe under the action of vacuum force. The sizing end sleeve 2 is provided with a mounting disc 4 at one end facing the sizing conduit 1, a plurality of mounting holes are arranged on the mounting disc 4 and are used for mounting and fixing the sizing conduit 1 and the sizing end sleeve 2.

[0029] In a further embodiment, the water injection joint 6 is provided with one, the cooling water is branched by the drain passage 12 and the plurality of water distribution holes 11 and the plurality of water inlet holes 10 in the water distribution ring 3, and then only one water injection joint 6 is needed to continuously convey the cooling water, compared with the structure of the conventional vacuum sizing sleeve which uses a plurality of water injection joints 6 to convey water, the number of water injection joints 6 is greatly reduced, and the problems of complex water conveying pipe, difficult maintenance and affecting the quality monitoring of the PE pipe are avoided as much as possible.

[0030] In the embodiment, the communication part of the drain passage 12 and the water injection joint 6 is arranged in a "person" shape, and the cooling water conveyed by the water injection joint 6 can be quickly branched into the drain passage 12 under the assistance of the "person" structure.

[0031] In the embodiment, the outer peripheral wall of the water distribution ring 3 is provided with a plurality of lug blocks 7, the lug blocks 7 are provided with connecting screws 8 which are screwed with the mounting disc 4, for assembling and fixing the water distribution ring 3, the water distribution ring 3 is provided with a sealing ring 9, the sealing ring 9 is extruded and attached with the inner wall of the water distribution ring 3 and the outer wall of the sizing end sleeve 2, the water distribution holes 11 extend through the sealing ring 9, the sealing ring 9 is provided with protruding blocks 13 at the positions corresponding to the water distribution holes 11 on the inner circumferential surface, the sizing end sleeve 2 is provided with recesses at the positions corresponding to the water inlet holes 10 on the outer wall, the protruding blocks 13 are embedded in the recesses, the sealing ring 9, together with the embedding of the protruding blocks 13 and the recesses, can seal the joint surface of the water distribution ring 3 and the sizing end sleeve 2, so as to avoid the leakage of cooling water.

[0032] Working principle: in use, the sizing conduit 1 and the sizing end sleeve 2 are installed on the PE pipe production line through the mounting disc 4, the water injection joint 6 is connected with the water source, the PE pipe firstly passes through the sizing end sleeve 2 after being extruded by the extruder, and then passes through the sizing conduit 1, under the action of the vacuum force, the PE pipe is attached with the inner walls of the sizing end sleeve 2 and the sizing conduit 1 for conveying, at the same time, the cooling water is conveyed into the water drainage channel 12 through the water injection joint 6, the cooling water is evenly flowed to the inner wall of the sizing end sleeve 2 and the outer wall of the PE pipe through the water drainage channel 12, the PE pipe is quickly cooled and shaped, at the same time, a layer of water film is formed between the PE pipe and the inner walls of the sizing conduit 1 and the sizing end sleeve 2, which is beneficial to the conveying of the PE pipe, the cooling water flowed into the sizing conduit 1 can be flowed out and dissipated through the plurality of slot holes 5, and the whole realizes the effect of cooling and shaping the PE pipe, since the sizing end sleeve 2 is sleeved with the water distribution ring 3, the cooling water is divided through the water drainage channel 12 and the plurality of water distribution holes 11 and water inlet holes 10 in the water distribution ring 3, and then only one water injection joint 6 is needed to continuously convey the cooling water, compared with the structure of the traditional vacuum sizing sleeve which adopts a plurality of water injection joints 6 to convey water, the number of the water injection joints 6 is greatly reduced, and the problems of complex water conveying pipe, difficult maintenance and affecting the quality monitoring of the PE pipe are avoided as much as possible.

[0033] All the technical features in the embodiment can be freely combined according to actual needs.

[0034] Finally, it should be noted that: the above only describes the preferred embodiments of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A vacuum sizing sleeve, comprising a sizing conduit (1), characterized in that: one end of the sizing conduit (1) is connected with a sizing end sleeve (2), the sizing conduit (1) and the sizing end sleeve (2) have the same inner diameter; a water distribution ring (3) is sleeved on the sizing end sleeve (2), a plurality of hydrophobic channels (12) are formed in the water distribution ring (3), the water distribution ring (3) is provided with a ring of hydrophobic channels (12), a water injection joint (6) is arranged on the outer wall of the water distribution ring (3) and communicates with the hydrophobic channels (12), a plurality of water distribution holes (11) are uniformly formed in the inner wall of the water distribution ring (3) and communicate with the hydrophobic channels (12), a plurality of water inlet holes (10) are radially formed on the sizing end sleeve (2) and communicate with the inner space of the sizing end sleeve (2), and the plurality of water inlet holes (10) are aligned and communicated with the plurality of water distribution holes (11).

2. A vacuum sizing sleeve according to claim 1, characterized in that The water injection joint (6) is provided with one.

3. A vacuum sizing sleeve according to claim 1, wherein, The communication part between the hydrophobic channel (12) and the water injection joint (6) is arranged in a "person” shape.

4. The vacuum sizing sleeve of claim 1 wherein, The sizing end sleeve (2) is provided with a mounting disc (4) at one end facing the sizing conduit (1), and a plurality of mounting holes are formed in the mounting disc (4).

5. A vacuum sizing sleeve according to claim 4, wherein, A plurality of ear blocks (7) are arranged on the outer peripheral wall of the water distribution ring (3), and a connecting screw (8) is arranged on the ear block (7) and threadedly connected with the mounting disc (4).

6. The vacuum sizing sleeve of claim 1 wherein, A sealing ring (9) is arranged in the water distribution ring (3), the sealing ring (9) is extruded and attached to the inner wall of the water distribution ring (3) and the outer wall of the sizing end sleeve (2), and the water distribution hole (11) extends through the sealing ring (9).

7. A vacuum sizing sleeve according to claim 6, wherein, A protruding block (13) is arranged on the inner circular surface of the sealing ring (9) at a position corresponding to the water distribution hole (11), and a recess is arranged on the outer wall of the sizing end sleeve (2) at a position corresponding to the water inlet hole (10), and the protruding block (13) is embedded in the recess.

8. The vacuum sizing sleeve of claim 1 wherein, A plurality of groove holes (5) are formed in the pipe wall of the sizing conduit (1), and the plurality of groove holes (5) are distributed in a staggered manner around the sizing conduit (1).

9. A vacuum sizing sleeve according to claim 8, wherein, The spacing of the plurality of groove holes (5) gradually increases in a direction away from the sizing end sleeve (2), and the width of the plurality of groove holes (5) gradually increases in a direction away from the sizing end sleeve (2).

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